California Air Reosurces Board, CARB, has verified a system from the filter manufacturer Johnson Matthey, called EGRT. The system is a combination between STT Emtec's emission control system, DNOx and Johnson Matthey's CRT filter.

The County Council of Västernorrland gives every second year a company or person an award for environmental work. The Environment Award for 2005 was given to STT Emtec AB for its work involving hi-tech knowledge, the advance of technology in the interest of the environment. Read the jury`s grounds.

The engine test laboratory of Sweden based company STT Emtec has been accredited according to the internationally accepted standard for engine laboratories ISO/IEC 17025. This was confirmed by the Governmental authority Swedac, -Board for accreditation and technical control. The accreditation assures that the engine test laboratory, a core off the company's Research and Development, meets this high standard.

Sweden based STT Emtec takes another step forward in emission control for heavy and medium-duty diesel engines. The company has developed an active system for diesel particulate filters, which solves the problem with soot particulates by burning them. The system is based on catalytic combustion of diesel fuel injected into the exhaust gases.

Swedish technology will now be used to clean the exhaust gases from London's huge fleet of buses. STT Emtec, of Sundsvall, in collaboration with the Engelhard Corporation, an American filter manufacturer, has been commissioned to install exhaustcleaning systems in a number of London's 6,000 buses.

The technology of STT of Sundsvall to reduce nitrogen oxides in diesel exhausts, is now undergoing its first big test - in California. California is renowned for having the toughest regulations in the world today for exhaust emissions, and is preparing even more stringent legislation. In April this year, STT signed a co-operation agreement with the US-based Engelhard Corporation, which specialises in advanced filter technology. That company is one of the world`s biggest suppliers of catalysts and systems to reduce pollution from combustion engines. This co-operation opens up a huge market for STT.

The environmental problems of diesel are high on the agenda these days. Political measures include raising taxes on diesel to reduce its use, thereby reducing environmental problems. The STT Holding AB Group in Sundsvall has made a technological breakthrough that makes it possible to significantly reduce harmful emissions from heavy diesel vehicles. STT is aiming at a listing on the stock exchange, and some of the biggest names in Swedish industry have decided to become shareholders in the company.